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Method of applying a non-voc coating

a non-voc coating and coating technology, applied in the direction of coatings, pretreatment surfaces, cleaning using liquids, etc., can solve the problems of many plasticizers being potentially toxic to humans, new solid resins for water-based systems, and poor film quality, so as to improve the performance of finial films, improve the gloss, and the effect of improving the gloss

Inactive Publication Date: 2010-09-30
TARKSOL INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0031]The compound formed by performing the steps of the inventive method when used as a coating has largely improved finial film properties over other solvents and over water-based products. The terpene alcohol portion of the blend functions as a plasticizer in the resin, which creates films that are higher gloss, tougher, more flexible, and exhibit improved surface wetting and viscosity. The inventive method may include further steps in which other solvents may be used for particular purposes.

Problems solved by technology

Although ozone is beneficial in the upper atmosphere because it absorbs UV, thus protecting humans, plants, and animals from exposure to dangerous solar radiation, it poses a health threat in the lower atmosphere by causing respiratory problems.
In addition high concentrations of low level ozone can damage crops and buildings.
The United States Environmental Protection Agency (U.S. EPA) forced industry to switch to water-based coatings, due to the solvent VOC issues in relationship to VOC regulations.
This resulted in new solid resins for water-based systems, which do not have the quality of film or performance properties that the solvent systems exhibited.
Almost all coatings use a plasticizer, which provides shine and gloss, but many plasticizers are potentially toxic to humans.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Acrylic Coating

[0063]1) Add alpha-terpineol to acetone (first solvent) to form a second solvent having a flash point of at least 140° F.;

[0064]2) In the second solvent, dissolve Paraloid B-64, to form a composition comprising 25 parts by weight of Paraloid B-64 and 75 parts by weight of a second solvent.

[0065]Paraloid B-64 is produced by Rohm and Haas Company, Philadelphia, Pa. 19106.

[0066]Historically, formulations containing Paraloid B-64 acrylic resin have normally been solubilized in Toluene, Xylene and PM acetate. However, formulations containing these solvents do not meet U.S. EPA VOC regulations.

[0067]When Paraloid B-64 was mixed with the acetone / alpha terpineol solvent, it exhibited no VOCs, but had superior gloss, tougher film, and better adhesion and did not require the addition of other plasticizers.

example 2

Acrylic / Vinyl / Cellulose Acetate Butyrate General Purpose Clear Topcoat

[0068]1) Add alpha-terpineol to acetone (first solvent) to form a second solvent having a flash point of at least 140° F.;

[0069]2) In the second solvent, dissolve a mixture of:

[0070]Paraloid A-11

[0071]Vinyl Copolymer

[0072]Cellulose Acetate Butyrate

to form a composition comprising 32.0 parts by weight Paraloid A-11, 65 parts by weight Vinyl Copolymer, 4 parts by weight Cellulose Acetate Butyrate. A second solvent is required for proper solids or viscosity.

[0073]The compounds were produced by the following companies:

[0074]Paraloid A-11—Rohm and Haas Company, Philadelphia, Pa. 19106

[0075]Vinyl Copolymer—Dow Chemical Co.

[0076]Cellulose Acetate Butyrate—Eastman Chemical Products

[0077]The Acrylic / Vinyl / Cellulose Acetate Butyrate coating formulated via the inventive method exhibited improved film properties over formulations formulated with VOC solvents. A glossy uniform film was exhibited without the use of any plastici...

example 3

Polyvinyl Butyral

[0078]1) Add alpha-terpineol to acetone (first solvent) to form a second solvent having a flash point of at least 140° F.;

[0079]2) In the second solvent, dissolve a mixture of:

[0080]Butvar B-76

[0081]Durite P-97

to form a composition comprising 56.7 parts by weight second solvent, 3.3 parts by weight Butvar B-76, and 40.0 parts by weight Durite P-97.

[0082]The compounds were produced by the following companies:

[0083]Butvar B-76—Solutia, St. Louis, Mo. 63166

[0084]Durite P-97—Borden Chemical Company

[0085]Mixing the polyvinyl butyral / phenolic resin / alpha terpineol blend created an instant solution and formed an outstanding coating, without the use of any other plasticizers. The dried coating exhibited the same properties as a formulation made with toluene, xylene, methyl isobutyl ketone and ethanol. The formulation exhibited a non-VOC coating with equivalent film properties.

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Abstract

A method for applying a coating meeting a predetermined volatile organic compound (VOC) standard. The compound functions as a coating and plasticizer. The inventive method involves mixing acetone and terpene alcohol, or terpineol, to form a solvent system with a flash point of at least 140° F. A resin is solubilized into the solvent system and forms a coating. The coating is cast over substrate surfaces to cure and dry. The solvent system produced by the inventive method can also be used in other applications including as a cleaning composition.

Description

FIELD OF THE INVENTION[0001]The present invention pertains to a method for applying coatings and, more particularly, to a method for applying coatings meeting a predetermined volatile organic compound standard.BACKGROUND OF THE INVENTION[0002]In the past several years, concerns have arisen over the use of volatile organic compounds (VOCs). VOCs are organic chemical compounds that have vapor pressures high enough under normal conditions to significantly vaporize and enter the atmosphere. A wide range of carbon-based molecules, such as aldehydes, ketones, and hydrocarbons are VOCs.[0003]Some VOCs react with nitrogen oxides in the air in the presence of sunlight to form ozone. Although ozone is beneficial in the upper atmosphere because it absorbs UV, thus protecting humans, plants, and animals from exposure to dangerous solar radiation, it poses a health threat in the lower atmosphere by causing respiratory problems. In addition high concentrations of low level ozone can damage crops ...

Claims

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Application Information

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IPC IPC(8): B05D3/02B08B3/00C09D7/80
CPCC09D7/001C11D7/261C11D11/0005C11D7/264C11D7/5022C11D7/262C09D7/20C11D2111/40B05D3/02B05D7/00
Inventor KOETZLE, RICHARD A
Owner TARKSOL INT